KETEP 세계에너지시장정보

Abstract ...................................................................................................................................................................................................... 2 

Acknowledgements .............................................................................................................................................................................. 3 

1 Introduction ....................................................................................................................................................................................... 4 

2 Flexibility for distribution systems ....................................................................................................................................... 6 
 2.1 Key elements of flexibility assessment in distribution systems ............................................................... 6 
  2.1.1 Demand-Side management ............................................................................................................................ 6 
  2.1.2 Energy storage technologies ........................................................................................................................... 7 
  2.1.3 Advanced smart grid technologies .............................................................................................................. 7 
  2.1.4 Distributed energy resource management systems .......................................................................... 7 
  2.1.5 Grid-Scale renewable integration ................................................................................................................. 8 
  2.1.6 Electric vehicles ...................................................................................................................................................... 8 
  2.1.7 Smart home appliances ..................................................................................................................................... 9 
  2.1.8 Virtual power plants ............................................................................................................................................. 9 
 2.2 Distributed flexibility potential, benefits and challenges .............................................................................. 9 

3 Flexibility needs concepts for the methodology ........................................................................................................ 11 
 3.1 Local vs. global flexibility needs .............................................................................................................................. 11 
 3.2 Flexibility needs and local flexibility markets ................................................................................................... 11 
 3.3 Mechanisms of flexibility: ability to respond and energy shifting ........................................................ 12 
 3.4 Flexible integration of DSO capabilities ............................................................................................................... 13 
 3.5 Distribution level congestions and resources in the FNA ........................................................................... 13 
  3.5.1 Bottom-up Flexibility Assessment - DSO needs assessment approach .............................. 14 
  3.5.2 Top-down Flexibility Assessment Approach - TSO needs approach ...................................... 14 
  3.5.3 Hybrid Flexibility Assessment Approach - DSO–TSO Integrated needs approach ......... 15 

4 Conclusions ..................................................................................................................................................................................... 17 

References ............................................................................................................................................................................................. 18 

List of abbreviations and definitions ...................................................................................................................................... 20 

List of figures ....................................................................................................................................................................................... 21 

List of tables ......................................................................................................................................................................................... 22